Getting the Organization Id for a top-level organization

[10年前 に Gaurav Sharma によって更新されました。]

I'm able to get the organizationId using the following code:

ThemeDisplay themeDisplay = LiferayFacesContext.getInstance().getThemeDisplay();
long liferayOrganizationId = themeDisplay.getScopeGroup().getOrganizationId();

But this code does not work for top-level orgs.